I have been using 1.0.39 with success for weeks and decided to give 1.0.40 a try today. What a joke. It did nothing but freeze and pixelate and green screen even at 20 ft away. I have since reverted to 1.0.39 again and will stay there. Lesson learned. I know there are other threads about bad FPV but I can tell you that 1.0.40 is a failure for me on my note3 with kitkat.